--- cdrkit-1.1.11/genisoimage/genisoimage.c~	2013-10-10 22:12:08.000000000 +0200
+++ cdrkit-1.1.11/genisoimage/genisoimage.c	2013-10-10 22:13:56.748278449 +0200
@@ -3415,7 +3415,7 @@
 	if (goof) {
 		fprintf(stderr, "ISO9660/Rock Ridge tree sort failed.\n");
 		if(merge_warn_msg)
-			fprintf(stderr, merge_warn_msg);
+			fprintf(stderr, "%s", merge_warn_msg);
 		exit(1);
 	}
 #ifdef UDF
@@ -3428,7 +3428,7 @@
 	if (goof) {
 		fprintf(stderr, "Joliet tree sort failed. The -joliet-long switch may help you.\n");
 		if(merge_warn_msg)
-			fprintf(stderr, merge_warn_msg);
+			fprintf(stderr, "%s", merge_warn_msg);
 		exit(1);
 	}
 	/*
--- cdrkit-1.1.11/genisoimage/tree.c~	2013-10-10 22:14:34.000000000 +0200
+++ cdrkit-1.1.11/genisoimage/tree.c	2013-10-10 22:16:22.318372090 +0200
@@ -648,7 +648,7 @@
      fprintf(stderr, "Unable to sort directory %s\n",
            this_dir->whole_name);
      if(merge_warn_msg)
-        fprintf(stderr, merge_warn_msg);
+        fprintf(stderr, "%s", merge_warn_msg);
      exit(1);
 	}
 	/*